Pumping apparatus



Dec. 18, 1928.

'G. A. BUVINGER ET AL PUMPI NG APPARATUS Original Filed Nov. 18. 1921 2Sheets-Sheet 5 u mi 0 mm H v a? 4 m n 7. Z WM 12* e 5mg Patented Dec.18, 1928.

' UNITED STATES.

PATENT OFFICE...

GEORGE A. BUVINGER AND CLARENCE WARNER, OF DAYTON, OHIO; ASSIGNO'RS TODELCO-LIGHT COMPANY, OF DAYTON, OHIO, A CORPORATION OF DELAWARE;

PUMPING APPARATUS.

Original application filed November 18, 1921, Serial No. 516,159.Divided and this application filed March 2, 1923. Serial No. 622,462.

The present invention relates to pump, and particularly to the suctiontype of pump in which the pumping apparatus is located above the well orcistern from which the water is being pumped.v

The present application is adivision of our copending application,Serial No. 516,159, filed November 18, 1921.

It is an object of the present invention to provide a priming device forpumps of water systems which will maintain the pump in a primedcondition and which is simple 111 construction and which can be readilyattached to the pump.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to the accompanyingdrawings, wherein a preterred embodiment of one form of the presentinvention is clearly shown.

In the drawings:

1 is a horizontal sectional view of awell known type of pump head forsuction pumps, the section being taken on line 11 of Fig. 2;

2 is a vertical sectional view taken on lines 2-2 and 2'-2 of Fig. 1,showing the improved priming attachment in operating position;

Fig. 3 is an enlarged sectional view of one of the discharge valves;

Fig. 1 is a diagrammatic sectional view of the pump head and primingdevice, showing the operating relation therebetween, and

Fig. 5 is a side view of an improved water system provided with theimproved priming device.

Referring to the drawings, 20 is a storage tan carried by brackets 21.A. pump unit 22 is supported above the tank 20 and has an inlet pipe 23andan outlet pipe 24. Pipe 2 carries the water from the pump unit to thetank from which through pipe 25.

The pump unit 22 includes a pump head 33 of the well known type used insuction pump. Head is connectel with the inlet pipe 23 leading from awell or cistern and with a priming device 40. Priming device 40 isconnected with a storage tank or a system being supplied by the outletpipe 24.

Pump head 33 carries a cylinder 34 in which.

a piston 35 is adapted to operate, the piston 35 being reciprocated by apiston rod 36.

it is distributed as desired Referring now to Figs. 1 and 2 whichshowthe details of construction-of thepump head;

it will be observed that the pump employedi is of the double-acting typein which water. is drawn from asuction chamber. 83 into-the pulsation orpumping chambers 86 and 89-- and then forced into a discharge-chamber87,

from whence it passes through the priming-device 10 to the pipe 24,ashereatter m0re.;1'ully described. The suction-chamber 83 isincommunication'with a dome-like chamber 81 havlng a partition wall 82, asshown, Wl11Cl1=.

chamber is in turn connected with the inlet pipe 23through the passage80. Thesuction chamber 83 is connected to the pulsation chamber 86 bymeans of an opening. An inlet valve 85in the opening permitsthe flow ofiwater fromthe suction chamber 83 into thepulsation chamber 86 butprevents thewater from fiowing'i rom the-pulsation chamber'86 into thesuction chamber 83. Alsothe pulsation chamber-SG-is connected; tothedischarge chamber 87 by means of an opening inwhich a discharge valve88 islocate'd. Discharge valve 88 permit-s water to iiow from the-p111;-sation chamber 86, to the dischargecliamber 87 but normally prevents thereturn of thewater from said discharge chamber 87to the pulsationchamber 86. The pulsation chame- 7 her 89 is in communication with thesuction; chamber 83 and Wltli the discharge chamber The valve 88comprises a seat portion 105- having a projecting lug 106 into which isscrewed the valve stem 107 carrying a slid able rubber valve member 108which is nor-- mally held upon the seat 105 by means of a. spring 109.Valve seat 105 is provided with a scratch 110 (see Fig. 3) which permitsthe passage of water from the discharge chamber 86 to the pulsationchamber 89, permitting permanent intercommunication between thesechambers for a purpose to be hereinafter described. I I

Drain openings 90, 91, 92. and 93 are vided in discharge chamber 87,pulsation chambers 89 and 86 and suction chamber 83, respectively, theseopenings each being con.- trolled by valves 95 whereby'all ot thechambers maybe drained to prevent freezing. The:

valve controlling the opening 93 leading to the suction chamber 88 alsofunctions as an air inlet to the pump head for a purpose to behereinafter explained.

Suitably attached to the pump head by means of bolts 97 is the primingdevice 40. Priming device 40 is provided with an opening 98 whichcommunicates with the discharge chamber 87 of the pump head. The primingdevice carries a coupling 99 to which a pipe 100 is connected whichprojects upwardly into the priming device. The outlet pipe 24 isconnected to the other end of the couple. Attached to the lower end ofthe priming device and in communication with the interior thereof, is apressure tube 102 which is connected at its other end to a suitablepressure pump control mechanism.

Assuming that the inlet pipe 23, pump head chamber 80, 81, 88, 86, 89,and 87, andthe priming device, are full of water and the piston movesforward, that is from the left to right as viewed in Fig. l, a partialvacuum will be created in the pulsation chamber 86. Atmospheric pressureon the water in the well will be transmitted to the suction chamber 88by the water in the pipe 28. The pressure in the suction chamber 88 willlift the inlet valve 85 from its seat, permitting water to enter thepulsation chamber 86. ll ow when the piston moves in the backwarddirection the valve 85 will be closed and the water will be forcedupwardly into the discharge chamber 87, past the discharge valve 88.While these movements of the piston are taking place, the valvescontrolling the inlet and outlet to the pulsation chamber 89 will movein the reverse order, that is, when the piston moves forward thedischarge valve connected with pulsation chamber 86 will be lifted andinlet valve 85 leading from the suction chamber to the pulation chamber89, will be closed. :In this manner a continuous discharge of water isobtained into the discharge chamber 87. From discharge chamber 87 thewater flows through the opening 98 into the priming device l0, andthence through the priming device into the pipe 100, outlet pipe 2 2.

The storage tank usually employed in the type of water system to whichthe present pump head is applied is closed to atmosphere so that aswater is forced into the tank, the air therein will be trapped andcompressed.

Because of the direct connection of the storage tank to the primingdevice 40 by means of pipe 24:, the pressure in the priming device 40and pipe will be the same as that in the tank. Therefore the pressureimpressed upon the pump control mechanism through the tube 102 is thesame as that in the tank. This pressure is adapted to cause the pumpcontrol mechanism to actuate to control the motor to maintain adesirable pressure within the tank. Due to the absorption of the air bythe water in the tank, it is necessary to re- Leena 1e plenish the tankwith air in order that the proper relation may be maintained between thepressure and the water level in the tank. When it is necessary toreplenish the tank with air, the valve 95 leading into the suctionchamber 83 is opened slightly during the pumping operation, permittingair to be drawninto the pump head and then forced into the tank by theaction of the piston.

The pressure in the priming device a0 also normally tends to force waterthrough the scratch 110, in the valve seat 105, into the pulsationchamber 86 so that pulsation chamber 86 is always filled with water, thepurpose of which will now be described: Should it happen that air wouldenter the inlet pipe 28, in any way, as by a leaky connection in saidpipe, the water woulddrain out. Then, when it is desired to again pumpwater it will be necessary to pump the air out of the pipe 28. This isdone in the following manner: Referring now particularly to Fig. l, inwhich the pump head is shown diagrammatically, the priming device a0,discharge chamber 87, and pulsating chamber 86, are substantially fullof water. Now as the piston moves forward the inlet valve 85 will beliftedand a quantity of air will be drawn into the pulsation chamber. Onthe backward stroke, the valve 88 will open permitting a large portionof the water and air to be forced out of the pulsar tion chamber 86 intothe discharge chamber 87. Some of the water in the priming device willbe forced down the pipes 100 and 24 into the tank While the air will betrapped at the top of the priming device 40. When the piston again movesforward, the air remaining in the pulsation chamber 86 will expand andsince but a relatively small quantity of water and a large quantity ofair are contained within the pulsation chamber 86, the expansion of theair is not sufficient to decrease the pressru'e to a point sufficientlylow to cause the valve .85 to lift. However, due to the vressure in thepriming device 40 and discharge chamber 87 and the relatively lowpressure in the pulsation chamber 86, water will be forced from thedischarge chamber 87 and priming device 40 through the scratch 110, inthe valve-seat 105, into the pulsation chamber On the backward stroke,due to the increased volume of water in the pulsation chamber, thepressure in the pulsation chamber 86 will be higher than that in thedischarge chamber 8? which will permit air to be forced out of thepulsation chamber 86 into the discharge chamber 87. This cycle ofpumping water into and air out of the pulsation chamber 86 continuesuntil only a small quantity of air remains. With only a small quantityof air in the pulsation chamber 86, the pressure therein is loweredbelow the pressure in the suction chamber 83, thereby causing valve 85to be lifted permitting another quantity of air to enter the pulsationchamlZll ber '86. This air is disposed of in the same manner as waspreviously described and this operation continues until all the air ispumped out of pipe 23. After all of the air has been pumped out of thepipe 23, the pressure on the water in the well will have forced thewater up through the pipe 28 into the suction chamber 83 and the pump isagain ready for its water pumping operation.

It will readily be understood that if the inlet 28 is of considerablelength a low pressure is necessary in the suction chamber 83 in orderthat the water may be lifted into said chamber. f a very low pressure isnecessary in the suction chamber 83 a still lower pressure must beobtained in the pulsation chamber 86, therefore, a. large amount ofwater is necessary in the pulsation chamber 86 and only a small quantityof air. The pipe 100 in the priming device extends upwardly into thepriming device 40, as shown, bringing the hydrostatic level in thepriming device near the top. With the hydrostatic water level near thetop of the priming device 40, enough water can be contained within theprimary device a0 and discharge chamber 87 to fill the pulsation chamber86 with water. l/Vhen the pulsation chamber 86 is filled with water andthe piston is moved forward, the desired low pressure is obtained in thechamber.

Due to the high pressure in the priming device 40 and discharge chamber87, water is forced from the chamber 87 into the pulsation chamber 86,through the scratch 110 in the valve seat 105, at a high velocity whenthe piston moves forward. With water flowing into the pulsation chamberat a high velocity, during the self priming operation, the pulsationchamber 86 is quickly lilled with water and in his manner the timenecessary for priming the pump is reduced to a minimum.

It will be apparent from the foregoing that there is provided a watersystem of the type in which the tank is located below the pump and inwhich system the pump is primed auton'iatically.

A priming device as is herein disclosed may be readily attached to theusual type of pump system and in so doing the system can be made selfpriming. Also with slight alteration in the capacity of the primingdevice ant. in the location of the holes for the bolts 97, the primingdevice 40 can be attached to different types of pumps.

Should this pump unit be installed where the temperature is such thatthe water remaining in the pump head is likely to freeze, it may bedesirable to drain all the pump head chambers and the priming devicewhich may lVhile the form of mechanism herein shown and describedconstitutes a preferred embodiment of one-form of invention, it is to beunderstood that other forms might be adopted and various changes andalterations made in the shape, size, and proportion of the elementstherein without departing from the spirit and scope of the invention.

What is claimed is as follows 1. In combination, a pump including apumping chamber, a discharge chamber, and a wall between said chambers,said wall having an opening therethrough for providing permanentintercommunication between the chambers,and a priming chamber locatedabove said pumping chamber and in communication therewith, said primingchamber and discharge chamber being adapted to contain sufficientquantity of liquid for priming said pumping chamber.

2. In combination, a pump including a pumping chamber, a dischargechamber, and a wall between said chambers, said wall having an openingtherethrough for providing permanent mtercommunication between thechambers, and a priming chamber located above said pumping chamber andin communication therewith, said priming chamber and discharge chamberhaving a capacity substantially equal to the capacity of the pumpingchamber.

3. In combination, a pump having a pumping chamber and a dischargepassage and a priming device detachably secured to the exterior of saidpump and having a storage chamber connected with the discharge passageand located above said pumping chamher.

4;. In combination, a pump having a pumping chamber and a dischargepassage, and a priming device detachably secured to the exterior of saidpump and having a storage chamber connected with the discharge passage,and a discharge conduit for the storage chamber having a portion locatedabove said pumping chamber.

In testimony whereof we hereto affix our signatures.

GEORGE A. BUVINGER. CLARENCE IVARNER.

